The use of SEM/EDS analysis to distinguish dental and osseus tissue from other materials

With increasing frequency, relatively small, fragmentary evidence thought to be osseous or dental tissue of human origin is submitted to the forensic laboratory for DNA analysis with the request for positive identification. Prior to performing DNA analysis, however, it is prudent to first perform a presumptive test or "screen" to determine whether the questioned material may be eliminated from further consideration. When material is shown not to be consistent with bone/teeth, DNA testing is not performed. When such determinations cannot be made from gross morphological features, elemental analysis can be indicative. This presumptive test is made possible by applying scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS) in conjunction with an X-ray spectral database recently developed by the FBI laboratory. This database includes spectra for many different materials including known examples of bone and tooth from many different contexts and representing the full range of taphonomic conditions. Results of SEM/EDS analysis of evidence can be compared to these standards to determine if they are consistent with bone and/or tooth and, if not, then what the material might represent. Analysis suggests that although the proportions and amounts of calcium and phosphorus are particularly important in differentiating bone and tooth from other materials, other minor differences in spectral profile can also provide significant discrimination. Analysis enables bone and tooth to be successfully distinguished from other materials in most cases. Exceptions appear to be ivory, mineral apatite, and perhaps some types of corals.     

Diagnostic problems associated with cadaveric trauma from animal activity

Analysis of a series of deaths between 1986 and 2001 resulting from natural disease, accidents, suicides, and homicide, where postmortem animal activity had traumatized bodies, was undertaken at the Forensic Science Center in Adelaide to demonstrate the range of lesions that may occur and problems in interpretation that result. Tissue damage had been caused by a variety of animals, including fly larvae, ants, birds, dogs, rodents, sea lice, and sharks. Postmortem animal activity had disguised injuries, modified wounds, and created the appearances of inflicted injury. Problems with identification occurred after postmortem facial trauma, and loss of organ parenchyma had interfered with, or precluded, the precise determination of the manner of death in some cases. Specific kinds of tissue and organ damage may occur after death, necessitating careful assessment of lesions in a search for characteristic features of animal activity. The pattern of lesions may enable identification of the particular species of animal involved.     

The Supply of University Enrollments: University Administrators as Utility Maximizing Bureaucrats

The supply of enrollments in higher education has receivedrelatively little attention in both theoretical and empiricaleconomic research. To address this, we formulate and test amodel of the supply of enrollments in higher education inwhich administrators are modeled as utility maximizingbureaucrats. We find evidence that individual presidents andprovosts have a significant effect on enrollment supply andfaculty demand in a panel of eleven public colleges anduniversities in Maryland from 1988 to 1996, implying thatinstitutions have enough market power to permit thepreferences of administrators to influence enrollment supplyand faculty demand.     

Federalism and the European Union: A constitutional perspective

Constitutional questions have resurfaced in the last few years with regard to the European Union. The Maastricht Treaty is a kind of constitutional reform. The rejection of this treaty by Denmark in its first referendum, and the subsequent debate of the treaty that has taken place, raise questions about both the nature of the European Union, and the process by which its rules (constitution) get revised and approved. Similar questions surround the entry of Austria and the three, additional Scandinavian countries into the Union. Perhaps, no event called the European Union's constitution, or lack thereof, into question more that way in which a new President of the Commission was chosen during the summer of 1994. This paper will reexamine the European Union's structure and procedures from a constitutional perspective. Drawing upon the author's recently completed book, Constitutional Democracy, the paper will review the purpose for the Union's existence, the implications of this purpose for the structure of the Union (federalism versus confederation), the rules for making collective decisions in the Union, citizenship, and in particular, the procedures by which the European Union's “Constitution” is written and revised. The constitutional perspective adopted is taken from public choice. The political institutions of the European Union are examined relative to those rational, self-interested individuals would choose to advance their interests.     

DNA typing of samples for polymarker, DQA1, and nine STR loci from a human body exhumed after 27 years

A body was exhumed from the ground after 27 years. Samples of femur bone, tooth, and a fingernail were collected and successfully subjected to DNA extraction, quantitation, amplification, and subsequently typed for DQA1, polymarker, and nine STR loci. All three types of samples were typed for D3S1358, vWA, FGA, D8S1179, D21S11, D18S51, D5S818, D13S17, D7S820, and amelogenin using ABI Prism 377 DNA sequencer.     

Pathologic features of childhood pedestrian fatalities

A retrospective analysis of 68 cases of fatal childhood pedestrian accidents in South Australia that occurred over a 20-year period from January 1977 to December 1996 was undertaken. The age range was 12 months to 16 years (average, 7.6 years), with a male to female ratio of 41:27. The most common site of significant injury was the head (91.2%), followed by the abdomen (50%), chest (47.1%), and neck (38.2%). The most frequently encountered significant injury combinations involved the head, chest, and abdomen (14.7%); the head and chest (11.8%); and the head, neck, and abdomen (11.8%). Injuries were severe, consisting of extensive compound and comminuted skull fractures, neck fractures, and massive intraparenchymal brain and internal organ damage with avulsions and fragmentation. Non-life-threatening limb injuries occurred in 88% of cases. A distinct subgroup involved infants and younger children playing in driveways at home who were hit by reversing vehicles. The injuries were often of such a severe nature that death was instantaneous and with no possibility of successful medical intervention. More deaths occurred during the winter than summer months.     

Caring for the orphan in the Philippines:A Policy-Capacity review

Using synthesis and an integrative approach, the article analyzes laws, policies, and institutions that protect the rights and promote the welfare of orphaned children in the Philippines. The article undertakes an exploratory review of the potential and contemporary impacts of colonialism, imperialism, feudalism, and capitalism on child and youth welfare and describes the conditions and difficulties Filipino children face in the current policy environment. To address these conditions and difficulties, the article offers a synthesis of potential and ongoing policy-capacity solutions in orphan and youth care, such as implementing a strong social supporting structure to grandparents as first caregivers, strengthening a mixed welfare system on orphan care, and legislating a national orphan policy.     

Requisites of radical reform: Income maintenance versus tax preferences

Why did tax reform succeed in gaining passage while the family assistance plan failed? Using cultural theory, we argue that the active consent of elites from three political cultures is required before radical policy proposals will win political support in America. Although the Nixon administration cast the income maintenance plan in integrative terms—support for the family—it failed because egalitarian leaders demanded more. Tax reform succeeded because elites of the three cultures—individualists, egalitarians, and supporters of hierarchy—saw benefits in the plan and were willing to compromise.